[src/trunk]: src/sys/dev/ic Group receiver-related variables together: move s...

[dyoung <dyoung%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/eef1506855ad
branches:  trunk
changeset: 572278:eef1506855ad
user:      dyoung <dyoung%NetBSD.org@localhost>
date:      Tue Dec 28 22:07:04 2004 +0000

description:
Group receiver-related variables together: move sc_rxctl nearer to
sc_rxnext.

Add sc_nrxdesc, the number of receive descriptors that we are
actually able to use.  sc_nrxdesc will ordinarily equal RTW_RXQLEN.
If buffers are exhausted, sc_nrxdesc < RTW_RXQLEN.  My next commit
will change dev/ic/rtw.c to deal with buffer exhaustion.

diffstat:

 sys/dev/ic/rtwvar.h |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (25 lines):

diff -r 3044d02bba7a -r eef1506855ad sys/dev/ic/rtwvar.h
--- a/sys/dev/ic/rtwvar.h       Tue Dec 28 22:00:36 2004 +0000
+++ b/sys/dev/ic/rtwvar.h       Tue Dec 28 22:07:04 2004 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: rtwvar.h,v 1.11 2004/12/27 06:12:28 dyoung Exp $ */
+/* $NetBSD: rtwvar.h,v 1.12 2004/12/28 22:07:04 dyoung Exp $ */
 /*-
  * Copyright (c) 2004, 2005 David Young.  All rights reserved.
  *
@@ -377,13 +377,14 @@
 
        /* s/w Tx/Rx descriptors */
        struct rtw_txctl_blk    sc_txctl_blk[RTW_NTXPRI];
-       struct rtw_rxctl        sc_rxctl[RTW_RXQLEN];
        u_int                   sc_txq;
        u_int                   sc_txnext;
 
        struct rtw_txdesc_blk   sc_txdesc_blk[RTW_NTXPRI];
        struct rtw_rxdesc       *sc_rxdesc;
+       struct rtw_rxctl        sc_rxctl[RTW_RXQLEN];
        u_int                   sc_rxnext;
+       u_int                   sc_nrxdesc;
 
        struct rtw_descs        *sc_descs;